ACCOUNT OF GENUS SEDUM AS FOUND IN CULTIVATION. 200 



from De Candolle's figure the inflorescence is very like that of 

 5. praealtum. 



Description. — A sub-shrubby evergreen perennial. Stem erect, i to 2 feet 

 high, up to i inch thick, with few ascending branches. Leaves aggregated near the 

 apices of the branches, rounded on face, flat on back, ij inch long, | inch broad, 

 \ inch thick, stalked ; petiole about \ inch long, ^ inch broad, lamina spathulate- 



(^ b c 



Fig. 119. — Leaves of {a) S. praealtum, [b) S. dendroideum, (c) S. confusum. 



orbicular, cuneate below, semicircular above ; margin entire, often white with 

 wax when young, purple when old. Inflorescence terminal, cymose-paniculate, 

 large, about 2 to 6 inches long by 4 inches across. Flowers bright yellow, nearly 

 i inch across. Sepals ovate, obtuse. Petals lanceolate, acute, \ inch long. Scales 

 small, truncate, slightly retuse. Carpels spreading in fruit. 



Not hardy. 



Habitat. — Central Mexico. 



Derives its name from its tree-like habit (Greek dendron, a tree). 



95. Sedum praealtum DC. (fig. 119a, 120). 



5. praealtum De Candolle, " Plant. Rar. Genev.," 10, 21, 1847. Hemsley, 

 "Biol. Centr. Amer., Bot.." 1, 398. " N. Amer. Flora," 22, 70. 



This is the most widely spread in gardens of the shrubby Sedums 

 of the dendroideum group, and is mostly grown under that name. 

 Of garden Sedums it is most likely to be confused with S. confusum, 

 a smaller plant with shorter leaves and smaller inflorescence ; the 

 differences between the two are particularized on p. 211. From its 

 ally, S. dendroideum, it may be distinguished by its leaves not distinctly 

 stalked and lamina more oblong (not suborbicular) (see fig. 119) and 

 its more branched bushy habit. 



Description. — A much-branched, glabrous, evergreen shrub, forming a low 

 bush, I to 2 feet high, and equally wide. Stems round, smooth, green, woody 



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